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# Round the following numbers to the number of significant figures indicated in parentheses. - PowerPoint PPT Presentation

Margaret buys a gold coin form the Franklin Mint that is certified to weigh 15.6 g. When she puts it on a balance in the lab, it displays 14.1g. What is the percent error in Margaret’s measurement?. Round the following numbers to the number of significant figures indicated in parentheses.

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Margaret buys a gold coin form the Franklin Mint that is certified to weigh 15.6 g. When she puts it on a balance in the lab, it displays 14.1g. What is the percent error in Margaret’s measurement?

• Round the following numbers to the number certified to weigh 15.6 g. When she puts it on a balance in the lab, it displays 14.1g. What is the percent error in Margaret’s measurement?of significant figures indicated in parentheses.

• 0.002876 (2)= 0.0029

• 598 (2)= 6.0x102

• 102670 (3)= 103000

• 6.75 x 10-3 (1)= 7x10-3

• Divide certified to weigh 15.6 g. When she puts it on a balance in the lab, it displays 14.1g. What is the percent error in Margaret’s measurement?the following numbers and report your answers to the correct number of significant figures in scientific notation.

• (4.0x10-6)/(8.0x10-3) = 0.5x10-35.0x10-4

• 15.0/3.0 = 5.0

• Match the measurements with the correct SI unit: correct number of sig figs.

• 1. Length F 2. Mass B 3. Temperature H4. Time D

• A. Liter F. Meter

• B. Kilogram G. Cubic Centimeter

• C. CelciusH. Kelvin

• D. Second I. Millisecond

• E. Kilometer J. Gram

• What is the density of the following substance? factors and the factor label method of analysis.

• change in y over the change in x = = 0.71g/ml

• Is the following substance:

• a. Rubidium=1.532g/ml b. Potassium = 0.71g/ml c. Beryllium=1.85g/ml

What is the value of 34 factors and the factor label method of analysis.oC in Kelvin?

K=C+273

K=34+273=307K

Determine the density of this object and report your answer to the correct number of sig figs.

60

50

4.6g

Calculate the volume of this object in cm to the correct number of sig figs.3 and then convert to mm3

I don’t remember the exact measurements, but….

V= L x W x H so…

78.7cm3

=78700mm3

Which of the following are derived measurements? for volume. (2 equations)

a. Mass d. Time

b. Length e. Temperature

c. Volume f. Density

Match the equivalent values: for volume. (2 equations)

1. 1 kg a. 0.1 kg

2. 1 dag b. 10000mg

3. 1 hg c. 0.0001 dag

4. 1 mg d. 10 hg

Do the following multidimensional conversion using the factor label method.

Convert 0.63lbs/qt→cg/mL

(2.2lbs=1kg, 1.1qt=1L)

****Remember Sig Figs****

How would you describe this archer’s skill in terms of accuracy and precision?

Precise, but not accurate